I've replaced the tailgate window rubber and there's a tiny patch of rough paint/metal on the bottom left hand side and I've had a trickle of water coming through into the van. Any thoughts on how to sort? Do I remove the seal/sand down/re-paint and replace the seal or would a lick of silicone do the job - under the seal? The van's just been painted!!!!! Grrrrrr..... I think I've probably answered my own question too...